No chance with the kind of direction the anime/manga is going rn. It's Nika Piece now. Heck, there are even two Nikas now.
Yes but their popularity is engraved on many, many, many, many, many and many people's mind. Whether they have closed story or not isn't that much relevant. Plus, Star Wars still gets produced till today.
Link is this fella:
You don't know that guy? Along with Kirby, Mario and Yoshi, Link is a very iconic figure in Nintendo.
And Cloud is the most iconic character in Final Fantasy, the most popular JRPG.